{
  "manageEntity": {
    "action": "Save",
    "entityId": "2085439625",
    "entityType": "Track",
    "nonce": "0x4685c63ec571cbba999d16d2d2fa5b8f0bea2f966993e7a18ed8aa73c420b137",
    "signature": "0x6e07e36efccf7e6d2273c50aa25ba46430fe7c79ebad0b305bc19d6b5308a1be170e237552aba0397c7c6848182338cd905c6a1fa951b77711a1acc7671705bb1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}